Design and Synthesis of the First Thiophene Thioglycosides
摘要:
A novel reported method for preparation of the first thiophene thioglycosides via a one-pot reaction of sodium thiophenethiolate salts with 2,3,4,6-tetra-O-acetyl--D-gluco- and galactopyranosyl bromides has been studied. The sodium thiophenethiolate salts were prepared using sodium cyanoethylene thiolate salts.
2-溴-1-芳基乙叉基丙二腈与共轭硫代乙腈反应生成区域选择性S烷基化产物,该产物随后可参与Thorpe反应。所得的烯氨基丙烯腈在碱催化下形成吡啶环,产生噻吩并吡啶。根据该通用方案,功能上取代的噻吩并[3,2- b ]吡啶,噻唑并[4,5- b ]吡啶,噻吩并[3,2- b:4,5- b ]二吡啶,它们的氢化类似物和吡啶基合成了[2',3':4,5]噻吩并[2,3- d ]嘧啶。
A convenient one-pot synthesis of novel functionalized thiophene, thieno[2,3-<i>b</i>] thiophene, thiopyran, and thiopyrano[2,3-<i>b</i>]thiopyran bearing phosphonate groups
作者:Tarik E. Ali、Mohammed A. Assiri
DOI:10.1080/17415993.2021.1909027
日期:2021.9.3
ABSTRACT Design of some novel functionalized thiophene, thieno[2,3-b]thiophene, thiopyran and thiopyrano[2,3-b]thiopyran bearing phosphonate groups was described in one-pot through simple two steps. The methodology depended on the reaction of three-component of chloroacetyl chloride with triethyl phosphite in the presence of sodium 2,2-dicyanoethene-1,1-bis(thiolate) or sodium (2,2-dicyano-1-methy
摘要 一些新型官能化噻吩、噻吩并[2,3- b ]噻吩、噻喃和含有膦酸酯基团的噻喃并[2,3- b ]噻喃的设计通过简单的两步在一锅法中进行了描述。该方法取决于氯乙酰氯的三组分与亚磷酸三乙酯在 2,2-二氰基乙烯-1,1-双(硫醇)钠或 (2,2-二氰基-1-甲硫基乙烯-1- yl)thiolate 以一定的顺序。
Fishwick, Brian R.; Rowles, David K.; Stirling, Charles J. M., Journal of the Chemical Society. Perkin transactions I, 1986, p. 1171 - 1180
作者:Fishwick, Brian R.、Rowles, David K.、Stirling, Charles J. M.